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63 lines
1.7 KiB
63 lines
1.7 KiB
/*============================================================================= |
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Copyright (c) 2001-2011 Joel de Guzman |
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Distributed under the Boost Software License, Version 1.0. (See accompanying |
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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==============================================================================*/ |
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#if !defined(FUSION_IS_VIEW_03202006_0015) |
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#define FUSION_IS_VIEW_03202006_0015 |
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#include <boost/fusion/support/detail/is_view.hpp> |
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#include <boost/fusion/support/tag_of.hpp> |
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namespace boost { namespace fusion |
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{ |
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// Special tags: |
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struct sequence_facade_tag; |
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struct boost_tuple_tag; // boost::tuples::tuple tag |
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struct boost_array_tag; // boost::array tag |
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struct mpl_sequence_tag; // mpl sequence tag |
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struct std_pair_tag; // std::pair tag |
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namespace extension |
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{ |
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template<typename Tag> |
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struct is_view_impl |
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{ |
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template <typename T> |
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struct apply |
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: detail::fusion_is_view<T> |
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{}; |
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}; |
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template <> |
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struct is_view_impl<sequence_facade_tag> |
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{ |
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template <typename Sequence> |
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struct apply : Sequence::is_view {}; |
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}; |
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template <> |
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struct is_view_impl<boost_tuple_tag>; |
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template <> |
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struct is_view_impl<boost_array_tag>; |
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template <> |
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struct is_view_impl<mpl_sequence_tag>; |
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template <> |
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struct is_view_impl<std_pair_tag>; |
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} |
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namespace traits |
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{ |
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template <typename T> |
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struct is_view : |
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extension::is_view_impl<typename fusion::detail::tag_of<T>::type>:: |
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template apply<T>::type |
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{}; |
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} |
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}} |
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#endif
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